View in WPF WinUI MAUI UWP View on GitHub
Use a geoprocessing service and a set of features to identify statistically significant hot spots and cold spots.
Use case
This tool identifies statistically significant spatial clusters of high values (hot spots) and low values (cold spots). For example, a hotspot analysis based on the frequency of 911 calls within a set region.
How to use the sample
Select a date range (between 1998-01-01 and 1998-05-31) from the dialog and tap on Analyze. The results will be shown on the map upon successful completion of the GeoprocessingJob
.
How it works
Create a GeoprocessingTask
with the URL set to the endpoint of a geoprocessing service.
Create a query string with the date range as an input of GeoprocessingParameters
.
Use the GeoprocessingTask
to create a GeoprocessingJob
with the GeoprocessingParameters
instance.
Start the GeoprocessingJob
and wait for it to complete and return a GeoprocessingResult
.
Get the resulting ArcGISMapImageLayer
using GeoprocessingResult.MapImageLayer
.
Add the layer to the map's operational layers.
Relevant API
GeoprocessingJob
GeoprocessingParameters
GeoprocessingResult
GeoprocessingTask
Geoprocessing, GeoprocessingJob, GeoprocessingParameters, GeoprocessingResult
Sample CodeAnalyzeHotspots.xaml AnalyzeHotspots.xaml AnalyzeHotspots.xaml.cs
Use dark colors for code blocks Copy
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
< UserControl
x:Class = "ArcGIS.UWP.Samples.AnalyzeHotspots.AnalyzeHotspots"
xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:esriUI = "using:Esri.ArcGISRuntime.UI.Controls" >
< UserControl.Resources >
< Style TargetType = "TextBlock" >
< Setter Property = "FontWeight" Value = "SemiBold" />
< Setter Property = "TextWrapping" Value = "Wrap" />
< Setter Property = "Margin" Value = "0,5,0,0" />
< Setter Property = "VerticalAlignment" Value = "Center" />
< Setter Property = "HorizontalAlignment" Value = "Right" />
</ Style >
< Style TargetType = "DatePicker" >
< Setter Property = "Margin" Value = "5,5,0,0" />
</ Style >
</ UserControl.Resources >
< Grid >
< esriUI:MapView x:Name = "MyMapView" />
< Border Style = "{StaticResource BorderStyle}" Width = "Auto" >
< Grid >
< Grid.RowDefinitions >
< RowDefinition Height = "Auto" />
< RowDefinition Height = "Auto" />
< RowDefinition Height = "Auto" />
< RowDefinition Height = "Auto" />
</ Grid.RowDefinitions >
< Grid.ColumnDefinitions >
< ColumnDefinition Width = "Auto" />
< ColumnDefinition Width = "*" />
</ Grid.ColumnDefinitions >
< TextBlock Text = "Select a date range for analysis."
Grid.Row = "0" Grid.Column = "0" Grid.ColumnSpan = "2"
Margin = "0" HorizontalAlignment = "Stretch"
TextWrapping = "Wrap" TextAlignment = "Center" />
< TextBlock Text = "From:"
Grid.Row = "1" Grid.Column = "0" />
< DatePicker x:Name = "FromDate"
Grid.Row = "1" Grid.Column = "1"
HorizontalAlignment = "Stretch" />
< TextBlock Text = "To:"
Grid.Row = "2" Grid.Column = "0" />
< DatePicker x:Name = "ToDate"
Grid.Row = "2" Grid.Column = "1"
HorizontalAlignment = "Stretch" />
< Button Content = "Run analysis"
Grid.Row = "3" Grid.Column = "0" Grid.ColumnSpan = "2"
Margin = "0,5,0,0" HorizontalAlignment = "Stretch"
Click = "OnAnalyzeHotspotsClicked" />
< Grid x:Name = "BusyOverlay"
Grid.Row = "0" Grid.RowSpan = "4" Grid.Column = "0" Grid.ColumnSpan = "2"
Margin = "-20"
Visibility = "Collapsed"
Background = "#8C000000" >
< Border HorizontalAlignment = "Center"
VerticalAlignment = "Center"
Padding = "15"
Background = "#FFC6C4C4" >
< Grid >
< Grid.RowDefinitions >
< RowDefinition Height = "Auto" />
< RowDefinition Height = "Auto" />
< RowDefinition Height = "Auto" />
</ Grid.RowDefinitions >
< ProgressBar x:Name = "Progress"
Grid.Row = "0"
IsIndeterminate = "True"
Height = "20" />
< TextBlock Text = "Executing analysis..."
Grid.Row = "1"
HorizontalAlignment = "Center"
Margin = "5" Height = "20" />
< Button Content = "Cancel"
Grid.Row = "2"
HorizontalAlignment = "Center"
Click = "OnCancelTaskClicked" />
</ Grid >
</ Border >
</ Grid >
</ Grid >
</ Border >
</ Grid >
</ UserControl >